نتایج جستجو برای: irrigated area

تعداد نتایج: 591575  

Journal: :Remote Sensing 2012
Jana Edlinger Christopher Conrad John P. A. Lamers Gulchekhra Khasankhanova Thomas Koellner

The expansion of irrigated agriculture during the Soviet Union (SU) era made Central Asia a leading cotton production region in the world. However, the successor states of the SU in Central Asia face on-going environmental damages and soil degradation that are endangering the sustainability of agricultural production. With Landsat MSS and TM data from 1972/73, 1977, 1987, 1998, and 2000 the exp...

2014
Ismail Iynen Ozgur Sogut Rustu Kose

Objective. To assess the in vivo hemostatic effect of Ankaferd Blood Stopper (ABS). Study Design. An experimental study of an animal anterior epistaxis model. Setting. A tertiary care university hospital. Subjects and Methods. Wistar rats were randomized into 4 groups of 7 each: group 1, control, no pretreatment, irrigated with saline; group 2, no pretreatment, irrigated with ABS; group 3, cont...

2010
C. A. Gonzalez-Benecke

We studied the effect of water availability on basal area growth and wood properties of 11-year-old loblolly pine (Pinus taeda L.) trees from contrasting Florida (FL) (a mix of half-sib families) and South Carolina coastal plain (SC) (a single, half-sib family) genetic material. Increasing soil water availability via irrigation increased average wholecore specific gravity (SG) and latewood perc...

2013
Arti Yadav Pawan Kumar Yadav D. N. Shukla

The present study was carried out to assess levels of different heavy metals like Iron, Cadmium, Nickel, Lead, Copper and Zinc in vegetables irrigated with water from different sources industrial area of Naini Allahabad. The order of heavy metal concentration was found in Fe > Zn > Cd > Pb > Ni > Cu in irrigated water and Fe > Ni > Zn > Cu > Cd > Pb was observed in industrial contaminated sites...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Gerrit Schoups Jan W Hopmans Chuck A Young Jasper A Vrugt Wesley W Wallender Ken K Tanji Sorab Panday

The sustainability of irrigated agriculture in many arid and semiarid areas of the world is at risk because of a combination of several interrelated factors, including lack of fresh water, lack of drainage, the presence of high water tables, and salinization of soil and groundwater resources. Nowhere in the United States are these issues more apparent than in the San Joaquin Valley of Californi...

2015
Andrew Paul Gutierrez Luigi Ponti Hans R Herren Johann Baumgärtner

Background: Cotton with coevolving pests has been grown in India more than 5000 years. Hybrid cotton was introduced in the 1970s with increases in fertilizer and in insecticide use against pink bollworm that caused outbreaks of bollworm. Hybrid Bt cotton, introduced in 2002 to control bollworm and other lepidopteran pests, is grown on more than 90 % of the cotton area. Despite initial declines,...

1995
Gerald C. Nelson Daniel Hellerstein Ken Chomitz Peter Feather Charles Hallahan Ralph Heimlich Laurian Unnevehr

This paper develops a simple model of land use with roots in von Thunen's work. A cross-section version of the model is estimated with data from a satellite image and other geographical sources for a region in central Mexico. Parameters from the model are used to examine the effects of reduced human activity. If variables that proxy human influence are changed to reflect reduced impact, " fores...

Journal: :نشریه بازیافت آب 0
اعظم ابوالحسنی زرجوع دانشجوی کارشناسی ارشد گروه همزیستی با بیایان- محیط زیست، مرکز تحقیقات بین الملل بیابان دانشگاه تهران غلامرضا زهتابیان تهران، دانشگاه تهران، دانشکدة منابع طبیعی، گروه احیای مناطق خشک و کوهستانی ناصر مشهدی تهران، دانشگاه تهران، مرکز تحقیقات بین الملل بیابان، گروه همزیستی با بیابان، محیط زیست و منابع طبیعی حسن خسروی تهران، دانشگاه تهران، دانشکدة منابع طبیعی، گروه احیای مناطق خشک و کوهستانی مهدی سلطانی گردفرامرزی یزد، مرکز تحقیقات کشاورزی و منابع طبیعی استان یزد

water crisis is an important issue in arid regions like iran and has been exacerbated because of successive droughts recently. so the use of unconventional water is increasing in places where there is no good-quality water. one of these resources is urban wastewater that can provide nutrient for plant and if it has no negative impact on soil and water, it can be used for irrigation in de desert...

Journal: :Plant physiology 1985
S G Richardson K J McCree

The daily (24 hour) changes in carbon balance, water loss, and leaf area of whole sorghum plants (Sorghum bicolor L. Moench, cv BTX616) were measured under controlled environment conditions typical of warm, humid, sunny days. Plants were either (a) irrigated frequently with nutrient solution (osmotic potential -0.08 kilojoules per kilogram = -0.8 bar), (b) not irrigated for 15 days, (c) irrigat...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید